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  1. 11 11月, 2008 2 次提交
    • E
      When the capset syscall is used it is not possible for audit to record the · e68b75a0
      由 Eric Paris 提交于 
      actual capbilities being added/removed.  This patch adds a new record type
which emits the target pid and the eff, inh, and perm cap sets.

example output if you audit capset syscalls would be:

type=SYSCALL msg=audit(1225743140.465:76): arch=c000003e syscall=126 success=yes exit=0 a0=17f2014 a1=17f201c a2=80000000 a3=7fff2ab7f060 items=0 ppid=2160 pid=2223 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts0 ses=1 comm="setcap" exe="/usr/sbin/setcap" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null)
type=UNKNOWN[1322] msg=audit(1225743140.465:76): pid=0 cap_pi=ffffffffffffffff cap_pp=ffffffffffffffff cap_pe=ffffffffffffffff
Signed-off-by: NEric Paris <eparis@redhat.com>
Acked-by: NSerge Hallyn <serue@us.ibm.com>
Signed-off-by: NJames Morris <jmorris@namei.org>
      e68b75a0
    • E
      Any time fcaps or a setuid app under SECURE_NOROOT is used to result in a · 3fc689e9
      由 Eric Paris 提交于 
      non-zero pE we will crate a new audit record which contains the entire set
of known information about the executable in question, fP, fI, fE, fversion
and includes the process's pE, pI, pP.  Before and after the bprm capability
are applied.  This record type will only be emitted from execve syscalls.

an example of making ping use fcaps instead of setuid:

setcap "cat_net_raw+pe" /bin/ping

type=SYSCALL msg=audit(1225742021.015:236): arch=c000003e syscall=59 success=yes exit=0 a0=1457f30 a1=14606b0 a2=1463940 a3=321b770a70 items=2 ppid=2929 pid=2963 auid=0 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=pts0 ses=3 comm="ping" exe="/bin/ping" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null)
type=UNKNOWN[1321] msg=audit(1225742021.015:236): fver=2 fp=0000000000002000 fi=0000000000000000 fe=1 old_pp=0000000000000000 old_pi=0000000000000000 old_pe=0000000000000000 new_pp=0000000000002000 new_pi=0000000000000000 new_pe=0000000000002000
type=EXECVE msg=audit(1225742021.015:236): argc=2 a0="ping" a1="127.0.0.1"
type=CWD msg=audit(1225742021.015:236):  cwd="/home/test"
type=PATH msg=audit(1225742021.015:236): item=0 name="/bin/ping" inode=49256 dev=fd:00 mode=0100755 ouid=0 ogid=0 rdev=00:00 obj=system_u:object_r:ping_exec_t:s0 cap_fp=0000000000002000 cap_fe=1 cap_fver=2
type=PATH msg=audit(1225742021.015:236): item=1 name=(null) inode=507915 dev=fd:00 mode=0100755 ouid=0 ogid=0 rdev=00:00 obj=system_u:object_r:ld_so_t:s0
Signed-off-by: NEric Paris <eparis@redhat.com>
Acked-by: NSerge Hallyn <serue@us.ibm.com>
Signed-off-by: NJames Morris <jmorris@namei.org>
      3fc689e9
  3. 25 7月, 2008 1 次提交
  5. 25 6月, 2008 1 次提交
  7. 28 4月, 2008 4 次提交
    • A
      [PATCH] new predicate - AUDIT_FILETYPE · 8b67dca9
      由 Al Viro 提交于 
      Argument is S_IF... | <index>, where index is normally 0 or 1.
Triggers if chosen element of ctx->names[] is present and the
mode of object in question matches the upper bits of argument.
I.e. for things like "is the argument of that chmod a directory",
etc.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      8b67dca9
    • E
      Audit: increase the maximum length of the key field · a42da93c
      由 Eric Paris 提交于 
      Key lengths were arbitrarily limited to 32 characters.  If userspace is going
to start using the single kernel key field as multiple virtual key fields
(example key=key1,key2,key3,key4) we should give them enough room to work.
Signed-off-by: NEric Paris <eparis@redhat.com>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      a42da93c
    • E
      Audit: standardize string audit interfaces · b556f8ad
      由 Eric Paris 提交于 
      This patch standardized the string auditing interfaces.  No userspace
changes will be visible and this is all just cleanup and consistancy
work.  We have the following string audit interfaces to use:

void audit_log_n_hex(struct audit_buffer *ab, const unsigned char *buf, size_t len);

void audit_log_n_string(struct audit_buffer *ab, const char *buf, size_t n);
void audit_log_string(struct audit_buffer *ab, const char *buf);

void audit_log_n_untrustedstring(struct audit_buffer *ab, const char *string, size_t n);
void audit_log_untrustedstring(struct audit_buffer *ab, const char *string);

This may be the first step to possibly fixing some of the issues that
people have with the string output from the kernel audit system.  But we
still don't have an agreed upon solution to that problem.
Signed-off-by: NEric Paris <eparis@redhat.com>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      b556f8ad
    • E
      Audit: collect sessionid in netlink messages · 2532386f
      由 Eric Paris 提交于 
      Previously I added sessionid output to all audit messages where it was
available but we still didn't know the sessionid of the sender of
netlink messages.  This patch adds that information to netlink messages
so we can audit who sent netlink messages.
Signed-off-by: NEric Paris <eparis@redhat.com>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      2532386f
  9. 19 4月, 2008 2 次提交
  11. 15 2月, 2008 1 次提交
  13. 02 2月, 2008 5 次提交
  15. 30 1月, 2008 1 次提交
  17. 21 10月, 2007 2 次提交
    • A
      [PATCH] audit: watching subtrees · 74c3cbe3
      由 Al Viro 提交于 
      New kind of audit rule predicates: "object is visible in given subtree".
The part that can be sanely implemented, that is.  Limitations:
	* if you have hardlink from outside of tree, you'd better watch
it too (or just watch the object itself, obviously)
	* if you mount something under a watched tree, tell audit
that new chunk should be added to watched subtrees
	* if you umount something in a watched tree and it's still mounted
elsewhere, you will get matches on events happening there.  New command
tells audit to recalculate the trees, trimming such sources of false
positives.

Note that it's _not_ about path - if something mounted in several places
(multiple mount, bindings, different namespaces, etc.), the match does
_not_ depend on which one we are using for access.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      74c3cbe3
    • A
      [PATCH] pass dentry to audit_inode()/audit_inode_child() · 5a190ae6
      由 Al Viro 提交于 
      makes caller simpler *and* allows to scan ancestors
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      5a190ae6
  19. 11 10月, 2007 1 次提交
    • J
      [XFRM]: xfrm audit calls · ab5f5e8b
      由 Joy Latten 提交于 
      This patch modifies the current ipsec audit layer
by breaking it up into purpose driven audit calls.

So far, the only audit calls made are when add/delete
an SA/policy. It had been discussed to give each
key manager it's own calls to do this, but I found
there to be much redundnacy since they did the exact
same things, except for how they got auid and sid, so I
combined them. The below audit calls can be made by any
key manager. Hopefully, this is ok.
Signed-off-by: NJoy Latten <latten@austin.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      ab5f5e8b
  21. 24 8月, 2007 1 次提交
  23. 22 7月, 2007 2 次提交
  25. 17 7月, 2007 1 次提交
    • M
      Audit: add TTY input auditing · 522ed776
      由 Miloslav Trmac 提交于 
      Add TTY input auditing, used to audit system administrator's actions.  This is
required by various security standards such as DCID 6/3 and PCI to provide
non-repudiation of administrator's actions and to allow a review of past
actions if the administrator seems to overstep their duties or if the system
becomes misconfigured for unknown reasons.  These requirements do not make it
necessary to audit TTY output as well.

Compared to an user-space keylogger, this approach records TTY input using the
audit subsystem, correlated with other audit events, and it is completely
transparent to the user-space application (e.g.  the console ioctls still
work).

TTY input auditing works on a higher level than auditing all system calls
within the session, which would produce an overwhelming amount of mostly
useless audit events.

Add an "audit_tty" attribute, inherited across fork ().  Data read from TTYs
by process with the attribute is sent to the audit subsystem by the kernel.
The audit netlink interface is extended to allow modifying the audit_tty
attribute, and to allow sending explanatory audit events from user-space (for
example, a shell might send an event containing the final command, after the
interactive command-line editing and history expansion is performed, which
might be difficult to decipher from the TTY input alone).

Because the "audit_tty" attribute is inherited across fork (), it would be set
e.g.  for sshd restarted within an audited session.  To prevent this, the
audit_tty attribute is cleared when a process with no open TTY file
descriptors (e.g.  after daemon startup) opens a TTY.

See https://www.redhat.com/archives/linux-audit/2007-June/msg00000.html for a
more detailed rationale document for an older version of this patch.

[akpm@linux-foundation.org: build fix]
Signed-off-by: NMiloslav Trmac <mitr@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Paul Fulghum <paulkf@microgate.com>
Cc: Casey Schaufler <casey@schaufler-ca.com>
Cc: Steve Grubb <sgrubb@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      522ed776
  27. 11 5月, 2007 5 次提交
  29. 07 3月, 2007 1 次提交
  31. 18 2月, 2007 1 次提交
    • A
      [PATCH] AUDIT_FD_PAIR · db349509
      由 Al Viro 提交于 
      Provide an audit record of the descriptor pair returned by pipe() and
socketpair().  Rewritten from the original posted to linux-audit by
John D. Ramsdell <ramsdell@mitre.org>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      db349509
  33. 07 12月, 2006 1 次提交
  35. 04 10月, 2006 1 次提交
  37. 30 9月, 2006 1 次提交
  39. 29 9月, 2006 1 次提交
  41. 12 9月, 2006 2 次提交
  43. 03 8月, 2006 3 次提交